.computer {
  width: 400px;
  margin: 0 auto;
  .show {
    height: 120px;
    background: #000;
    color: #fff;
    font-size: 30px;
    & > div {
      padding: 10px 20px 0;
    }
  }
  ul {
    li {
      float: left;
      width: 100px;
      height: 100px;
      line-height: 100px;
      text-align: center;

      border: 1px solid;
      box-sizing: border-box;
      &.act {
        background: #e1e1e1;
      }
    }
  }
}

.box {
  width: 400px;
  height: 160px;
  margin: 0 auto;
  border: 1px solid #ddd;
  border-radius: 3px;
  .head {
    border-bottom: 1px solid #dee2e6;
    padding: 16px;
  }
  .body {
    border-bottom: 1px solid #dee2e6;
    padding: 16px;
  }
  .foot {
    text-align: right;
    line-height: 40px;

    button {
      padding: 3px 6px;
      margin-right: 15px;
      outline: none;
    }
  }
}
